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Mixed frame rate bug

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Paul Provost
Mixed frame rate bug
on Oct 26, 2012 at 4:50:14 am

I sure I've read about this before, but can't find it now. I am regularly having an issue where if I select the mixed frame rate option, the conform goes well except the native frame rate clips are all off by one frame. So I need to slip every clip. If I don't select the option, the native clips are good, but the odd frame rate clips are way off. Is there something I am missing or is this just the way it is? ie it doesn't work.
Latest versions of everything, Mac, blah blah blah- fcp 7 XML.

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Margus Voll
Re: Mixed frame rate bug
on Oct 26, 2012 at 9:53:39 am

i have seen something like that (1 frame off) also on mac but always thinking if it was mp4 ref problem.

have to dig deeper.

i just usually adjust ref -1 frame and all is good

--

Margus

http://iconstudios.eu

DaVinci 9, OSX 10.7.4
MacPro 5.1 2x2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro


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Paul Provost
Re: Mixed frame rate bug
on Oct 26, 2012 at 3:22:21 pm

This was prores 23.98 with some 25 and 29.97 h264 thrown in

http://www.4Kfinish.com | owner-colorist | Hollywood, CA


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Paul Provost
Re: Mixed frame rate bug
on Oct 27, 2012 at 5:09:53 am

Also some of the off rate clips were sd NTSC and pal sized. Is this just too much for resolve to deal with?

http://www.4Kfinish.com | owner-colorist | Hollywood, CA


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Clark Bierbaum
Re: Mixed frame rate bug
on Nov 1, 2012 at 1:49:15 pm

I'm in the same situation. 2 hour film, 99.9% Alexa Pro Res 23.98. I checked the mixed frame option because of a couple of 24fps clips but find almost all of the clips are a frame off. Seems like those between 2 dissolves are okay.

I hope we hear something from BM about this bug. Not an option to slip 800 clips by hand.

Timeline from XML with everything other than a few speed changes and dissolves removed.

Tried to "Offset Source Timecode" from "Clip Attributes" but that really caused a mess, clip lost in point????

P.S. I'm an actual paying customer since the first month.

Latest 9.0.3 Resolve, FCP, Mac OS 10.8.2 Mac Pro 5.1, ect.

Clark Bierbaum
Color Grading / Post Consultant
Charlotte, NC


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Paul Provost
Re: Mixed frame rate bug
on Nov 1, 2012 at 2:58:42 pm

Well glad to hear its not just me, and its not just my extreme mixed rate/resolution XML that failed. Your project sounds very clean and just what this option was designed for. I wish they would just acknowledge one way or the other...

http://www.4Kfinish.com | owner-colorist | Hollywood, CA


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Clark Bierbaum
Re: Mixed frame rate bug
on Nov 1, 2012 at 6:09:48 pm

I finished an extreme frame rate / format project (gopro 59.94 to aleaxa 23.98) and mixed rate worked well although the base frame stuff was off by a frame - thought that was okay as it was only 2min. and was happy it worked that well.

I agree, just say what's broken and help with a work around.

I'm to picky to send stuff out a frame off (especially a long format dramatic project.) Would also drive the audio guys nuts as everything would be out of sync.

What do you say BM??????

Clark Bierbaum
Color Grading / Post Consultant
Charlotte, NC


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Paul Provost
Re: Mixed frame rate bug
on Nov 9, 2012 at 7:08:37 pm

here's another user with same issue:
http://forum.blackmagicdesign.com/viewtopic.php?f=3&t=2496

http://www.4Kfinish.com | owner-colorist | Hollywood, CA
http://www.facebook.com/4kFinish


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Paul Provost
Re: Mixed frame rate bug
on Nov 10, 2012 at 5:05:09 pm

Bmd has responded and asked if there are speed changes as well in these problem projects? See thread above and please reply so we can keep the issue alive.

http://www.4Kfinish.com | owner-colorist | Hollywood, CA
http://www.facebook.com/4kFinish


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Eric Lalicata
Re: Mixed frame rate bug
on Nov 12, 2012 at 9:06:35 pm

I have also run into this problem with a 100% 23.98 fps Red footage timeline but the media pool had some 30 frame Pro Res files in it.

I enabled the mixed frame rate feature because we we're informed that they may be using 30fps shots for security camera shots. They ended up not using any of these shots in the first reel. When the XML was imported and the timeline checked against the offline ref video, lots of shots were out by one frame. Sometimes late, sometimes early. The timing position of the clip was accurate, but the media was slipped by one frame.

Since I could not disable this feature with all the clips in the media pool (why is that btw?) I had to blow out all the footage, turn off mixed frame rate and then reimport the footage back into the project. Re-import the same xml as before and all clips are in sync. Every shot is Red footage at 23.98 except for the leader which is Pro Res 422 23.98.

The Mixed frame rate option seems to have a major bug.

Eric Lalicata
Owner
Anarchy Post
1811 Victory Blvd
Glendale, CA 91201
818-334-3300



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